United Airlines flight UA 4556: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 07:30 Chicago O'Hare (ORD) 2 10:17 State College (SCE)
UA 4556 Non-stop Canadair CRJ 550 (CR5) 1:47 Effective from 2026-03-29
Sat 14:45 Pittsburgh (PIT) 16:04 Washington Dulles (IAD)
UA 4556 Non-stop Canadair CRJ 550 (CR5) 1:19 Valid until 2026-01-03
Sat 15:11 Saint Louis (STL) 1 16:54 Chicago O'Hare (ORD) 2
UA 4556 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-01-10 through 2026-02-07
Mon-Fri,Sun 15:25 Moline (MLI) 16:38 Chicago O'Hare (ORD) 2
UA 4556 Non-stop Canadair CRJ 550 (CR5) 1:13 Effective 2026-03-05 through 2026-03-27
Sat 15:52 Moline (MLI) 17:05 Chicago O'Hare (ORD) 2
UA 4556 Non-stop Canadair CRJ 550 (CR5) 1:13 Effective 2026-03-07 through 2026-03-28
Mon-Fri,Sun 17:10 Washington Dulles (IAD) 18:51 Portland (PWM)
UA 4556 Non-stop Canadair CRJ 550 (CR5) 1:41 Valid until 2026-01-04
Mon-Fri,Sun 17:10 Washington Dulles (IAD) 18:54 Burlington (BTV)
UA 4556 Non-stop Canadair CRJ 550 (CR5) 1:44 Effective 2026-01-06 through 2026-02-11
Daily 18:59 Newark Liberty, New York (EWR) C 20:28 Portland (PWM)
UA 4556 Non-stop Canadair CRJ 550 (CR5) 1:29 Effective 2026-02-12 through 2026-03-04
This flight number is listed as serving the following routes:


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United Airlines flight UA 4556: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4556
07:30
Chicago O'Hare (ORD) 2

10:17
State College (SCE)
Effective from 2026-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4556
14:45
Pittsburgh (PIT)

16:04
Washington Dulles (IAD)
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:19, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4556
15:11
Saint Louis (STL) 1

16:54
Chicago O'Hare (ORD) 2
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:43, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4556
15:25
Moline (MLI)

16:38
Chicago O'Hare (ORD) 2
Effective 2026-03-05 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:13, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4556
15:52
Moline (MLI)

17:05
Chicago O'Hare (ORD) 2
Effective 2026-03-07 through 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:13, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4556
17:10
Washington Dulles (IAD)

18:51
Portland (PWM)
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:41, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4556
17:10
Washington Dulles (IAD)

18:54
Burlington (BTV)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:44, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4556
18:59
Newark Liberty, New York (EWR) C

20:28
Portland (PWM)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:29, non-stop
Canadair CRJ 550 (CR5)
This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - State College (SCE)
  • Moline (MLI) - Chicago O'Hare (ORD)
  • Newark Liberty, New York (EWR) - Portland (PWM)
  • Pittsburgh (PIT) - Washington Dulles (IAD)
  • Saint Louis (STL) - Chicago O'Hare (ORD)
  • Washington Dulles (IAD) - Burlington (BTV)
  • Washington Dulles (IAD) - Portland (PWM)
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